1* Freescale Low Power SPI (LPSPI) for i.MX 2 3Required properties: 4- compatible : 5 - "fsl,imx7ulp-spi" for LPSPI compatible with the one integrated on i.MX7ULP soc 6 - "fsl,imx8qxp-spi" for LPSPI compatible with the one integrated on i.MX8QXP soc 7- reg : address and length of the lpspi master registers 8- interrupt-parent : core interrupt controller 9- interrupts : lpspi interrupt 10- clocks : lpspi clock specifier. Its number and order need to correspond to the 11 value in clock-names. 12- clock-names : Corresponding to per clock and ipg clock in "clocks" 13 respectively. In i.MX7ULP, it only has per clk, so use CLK_DUMMY 14 to fill the "ipg" blank. 15- spi-slave : spi slave mode support. In slave mode, add this attribute without 16 value. In master mode, remove it. 17 18Examples: 19 20lpspi2: lpspi@40290000 { 21 compatible = "fsl,imx7ulp-spi"; 22 reg = <0x40290000 0x10000>; 23 interrupt-parent = <&intc>; 24 interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>; 25 clocks = <&clks IMX7ULP_CLK_LPSPI2>, 26 <&clks IMX7ULP_CLK_DUMMY>; 27 clock-names = "per", "ipg"; 28 spi-slave; 29}; 30